INDEX. 



871 



Nabla, on the double nature of, 113. 

 Neon, on the molecular constants of, 

 795. 



Nicholson (Dr. J. W.) on the in- 

 ductance of two parallel wires, 255. 



Non-generating force, on the fre- 

 quency ranges of, 164. 



Oldham (R. D.) on the earth move- 

 ments associated with the Cali- 

 forman earthquake of 1906, 832. 



Oscillations, on electrical, in coupled 

 circuits, 28 ; on the transverse, of 

 a canal of circular section, 325 ; 

 on the production of stead}', in 

 closed circuits, 670. 



Osmotic theory of solutions, on the, 

 598. 



Owen (M.) on fractional electricity, 

 457. 



Peptone, on surface separation from 

 solutions of, 560. 



Photoelectric properties of potassium- 

 sodium alloy, oa the, 286. 



Pidduck (P. B.) on the absorption 

 of ultra-violet light by dilute 

 solutions, 710. 



Pipe, on the resistance to the flow 

 of air through a, 389. 



Pirani's method of measuring the 

 self-inductance of a coil, on, 849. 



Platinum, on the kinetic energy of 

 positive ions emitted by hot, 355. 



Pollock (Prof. J. A.) on the electron 

 theory of the carbon arc, 361 : on 

 the discharge of electricity from 

 glowing carbon, 366; on the re- 

 lighting of the carbon arc, 449. 



Positive rays, on the Doppler effect 

 in, 520. 



Potassium - sodium alloy, on the 

 photo-electric properties of, 286. 



Potential energy, on the kinetic 

 criterion of, 692. 



Potentiometer, on the use of the, on 

 alternate current circuits, 402. 



Pound (V. E.) on the absorption of 

 the different types of 8 rays, 126. 



Probability, on the law of, for a 

 system of correlated variables, 1. 



Radioactive emanations, on the ab- 

 sorption of, by charcoal, 374. 



products present in the atmo- 

 sphere, on, 321. 



substances, on the nature of 



the a particle from, 281. 



Radiotelegraphic receivers, on a 

 method of testing, 670. 



Radium, on the number and the 

 absorption by matter of the 8 

 particles emitted by, 171 ; on the 

 grating spectrum of the emanation 

 of, 202 ; on the condensation of 

 the emanation of, 723. 



Raman (C. V.) on the experimental 

 study of Huygens's secondary 

 waves, 204; on the discovery of the 

 ultra-microscopic method, 495. 



Ranclaud (A. B. B.) on the dis- 

 charge of electricity from glowing 

 carbon, 366 ; on the relighting of 

 the carbon arc, 449. 



Receivers, on a method of testing 

 radio -telegraphic, 670. 



Reed (F. R. C.) on the fossiliferous 

 rocks of the Tortworth inlier, 226. 



Reynolds (Prof. S. H.) on the 

 fossiliferous rocks of the Tort- 

 worth inlier, 226. 



Richardson (11. W.) on the effect 

 of an air-blast on the spark dis- 

 charge of a condenser, 677. 



Richardson (Prof. O. W.) on therm- 

 ionics, 813. 



Rontgen rays, on the absorption of, 

 739. 



Royds (T.) on the grating spectrum 

 of radium emanation, 202, 656 ; 

 on the nature of the a particle 

 from radioactive substances, 281. 



Rudorf (Dr. G.) on the molecular 

 and other constants of the inactive 

 gases, 795. 



Russ (S.) on the diffusion of acti- 

 nium and thorium emanations, 

 412. 



Russell (Dr. A.) on the effective 

 resistance and inductance of a 

 concentric main, 524. 



Rutherford (Prof. E.) on the nature 

 of the a particle from radioactive 

 substances, 281 ; on the con- 

 densation of the radium emanation, 

 723. 



Sadler (C. A.) on the absorption of 

 Rontgen rays, 739. 



Saponin, on surface separation from 

 solutions of, 560, 



Searle (G. F. C.) on the impulsive 

 motion of an electrified sphere, 43. 



Self-inductance of a coil, on Pirani's 

 method of measuring the, 849. 



Shorter (S. A.) on surface separation 

 from solutions of saponin, pep- 

 tone, and albumin, 560. 



